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Finding the Fourth Proportional to 953.61, 1,432.80 and 607.11

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Solution

The fourth proportional to 953.61, 1,432.80 and 607.11 is: 912.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.61 : 1,432.80 = 607.11 : x
  2. Step 2: Convert to fraction form
    953.61/1,432.80 = 607.11/x
  3. Step 3: Cross multiply
    953.61x = 1,432.80 × 607.11
  4. Step 4: Simplify right side
    953.61x = 869,867.21
  5. Step 5: Solve for x
    x = 869,867.21/953.61
  6. Step 6: Final answer
    x = 912.18

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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.