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Finding the Fourth Proportional to 1,001.88, 1,503.42 and 424.75

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Solution

The fourth proportional to 1,001.88, 1,503.42 and 424.75 is: 637.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.88 : 1,503.42 = 424.75 : x
  2. Step 2: Convert to fraction form
    1,001.88/1,503.42 = 424.75/x
  3. Step 3: Cross multiply
    1,001.88x = 1,503.42 × 424.75
  4. Step 4: Simplify right side
    1,001.88x = 638,577.65
  5. Step 5: Solve for x
    x = 638,577.65/1,001.88
  6. Step 6: Final answer
    x = 637.38

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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.