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Finding the Fourth Proportional to 617.88, 926.82 and 155.66

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Solution

The fourth proportional to 617.88, 926.82 and 155.66 is: 233.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.88 : 926.82 = 155.66 : x
  2. Step 2: Convert to fraction form
    617.88/926.82 = 155.66/x
  3. Step 3: Cross multiply
    617.88x = 926.82 × 155.66
  4. Step 4: Simplify right side
    617.88x = 144,268.80
  5. Step 5: Solve for x
    x = 144,268.80/617.88
  6. Step 6: Final answer
    x = 233.49

Related Problems

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Half scale
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Double scale
Find fourth proportional to 618.88, 928.32 and 156.66
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.