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Finding the Fourth Proportional to 1,432.71, 2,148.55 and 652.05

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Solution

The fourth proportional to 1,432.71, 2,148.55 and 652.05 is: 977.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.71 : 2,148.55 = 652.05 : x
  2. Step 2: Convert to fraction form
    1,432.71/2,148.55 = 652.05/x
  3. Step 3: Cross multiply
    1,432.71x = 2,148.55 × 652.05
  4. Step 4: Simplify right side
    1,432.71x = 1,400,962.03
  5. Step 5: Solve for x
    x = 1,400,962.03/1,432.71
  6. Step 6: Final answer
    x = 977.84

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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.