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Finding the Fourth Proportional to 962.80, 1,444.40 and 475.28

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Solution

The fourth proportional to 962.80, 1,444.40 and 475.28 is: 713.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.80 : 1,444.40 = 475.28 : x
  2. Step 2: Convert to fraction form
    962.80/1,444.40 = 475.28/x
  3. Step 3: Cross multiply
    962.80x = 1,444.40 × 475.28
  4. Step 4: Simplify right side
    962.80x = 686,494.43
  5. Step 5: Solve for x
    x = 686,494.43/962.80
  6. Step 6: Final answer
    x = 713.02

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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.