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Finding the Fourth Proportional to 1,625.13, 2,437.65 and 529.20

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Solution

The fourth proportional to 1,625.13, 2,437.65 and 529.20 is: 793.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,625.13 : 2,437.65 = 529.20 : x
  2. Step 2: Convert to fraction form
    1,625.13/2,437.65 = 529.20/x
  3. Step 3: Cross multiply
    1,625.13x = 2,437.65 × 529.20
  4. Step 4: Simplify right side
    1,625.13x = 1,290,004.38
  5. Step 5: Solve for x
    x = 1,290,004.38/1,625.13
  6. Step 6: Final answer
    x = 793.79

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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.