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Finding the Fourth Proportional to 617.87, 926.80 and 207.01

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Solution

The fourth proportional to 617.87, 926.80 and 207.01 is: 310.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.87 : 926.80 = 207.01 : x
  2. Step 2: Convert to fraction form
    617.87/926.80 = 207.01/x
  3. Step 3: Cross multiply
    617.87x = 926.80 × 207.01
  4. Step 4: Simplify right side
    617.87x = 191,855.05
  5. Step 5: Solve for x
    x = 191,855.05/617.87
  6. Step 6: Final answer
    x = 310.51

Related Problems

Find fourth proportional to 308.93, 463.40 and 103.50
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.