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Finding the Fourth Proportional to 609.93, 915.66 and 508.46

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Solution

The fourth proportional to 609.93, 915.66 and 508.46 is: 763.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.93 : 915.66 = 508.46 : x
  2. Step 2: Convert to fraction form
    609.93/915.66 = 508.46/x
  3. Step 3: Cross multiply
    609.93x = 915.66 × 508.46
  4. Step 4: Simplify right side
    609.93x = 465,569.36
  5. Step 5: Solve for x
    x = 465,569.36/609.93
  6. Step 6: Final answer
    x = 763.32

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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.