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Finding the Fourth Proportional to 615.87, 923.80 and 205.01

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Solution

The fourth proportional to 615.87, 923.80 and 205.01 is: 307.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.87 : 923.80 = 205.01 : x
  2. Step 2: Convert to fraction form
    615.87/923.80 = 205.01/x
  3. Step 3: Cross multiply
    615.87x = 923.80 × 205.01
  4. Step 4: Simplify right side
    615.87x = 189,384.93
  5. Step 5: Solve for x
    x = 189,384.93/615.87
  6. Step 6: Final answer
    x = 307.51

Related Problems

Find fourth proportional to 307.94, 461.90 and 102.50
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.