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Finding the Fourth Proportional to 1,001.68, 1,501.80 and 385.24

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Solution

The fourth proportional to 1,001.68, 1,501.80 and 385.24 is: 577.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.68 : 1,501.80 = 385.24 : x
  2. Step 2: Convert to fraction form
    1,001.68/1,501.80 = 385.24/x
  3. Step 3: Cross multiply
    1,001.68x = 1,501.80 × 385.24
  4. Step 4: Simplify right side
    1,001.68x = 578,553.43
  5. Step 5: Solve for x
    x = 578,553.43/1,001.68
  6. Step 6: Final answer
    x = 577.58

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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.