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Finding the Fourth Proportional to 1,577.47, 2,366.02 and 423.31

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Solution

The fourth proportional to 1,577.47, 2,366.02 and 423.31 is: 634.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,577.47 : 2,366.02 = 423.31 : x
  2. Step 2: Convert to fraction form
    1,577.47/2,366.02 = 423.31/x
  3. Step 3: Cross multiply
    1,577.47x = 2,366.02 × 423.31
  4. Step 4: Simplify right side
    1,577.47x = 1,001,559.93
  5. Step 5: Solve for x
    x = 1,001,559.93/1,577.47
  6. Step 6: Final answer
    x = 634.92

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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.