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Finding the Fourth Proportional to 1,356.93, 2,035.49 and 432.53

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Solution

The fourth proportional to 1,356.93, 2,035.49 and 432.53 is: 648.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356.93 : 2,035.49 = 432.53 : x
  2. Step 2: Convert to fraction form
    1,356.93/2,035.49 = 432.53/x
  3. Step 3: Cross multiply
    1,356.93x = 2,035.49 × 432.53
  4. Step 4: Simplify right side
    1,356.93x = 880,398.15
  5. Step 5: Solve for x
    x = 880,398.15/1,356.93
  6. Step 6: Final answer
    x = 648.82

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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.