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Finding the Fourth Proportional to 610.13, 915.20 and 220.16

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Solution

The fourth proportional to 610.13, 915.20 and 220.16 is: 330.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.13 : 915.20 = 220.16 : x
  2. Step 2: Convert to fraction form
    610.13/915.20 = 220.16/x
  3. Step 3: Cross multiply
    610.13x = 915.20 × 220.16
  4. Step 4: Simplify right side
    610.13x = 201,487.92
  5. Step 5: Solve for x
    x = 201,487.92/610.13
  6. Step 6: Final answer
    x = 330.24

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Double scale
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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.