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Finding the Fourth Proportional to 962.51, 1,442.75 and 474.55

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Solution

The fourth proportional to 962.51, 1,442.75 and 474.55 is: 711.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.51 : 1,442.75 = 474.55 : x
  2. Step 2: Convert to fraction form
    962.51/1,442.75 = 474.55/x
  3. Step 3: Cross multiply
    962.51x = 1,442.75 × 474.55
  4. Step 4: Simplify right side
    962.51x = 684,651.03
  5. Step 5: Solve for x
    x = 684,651.03/962.51
  6. Step 6: Final answer
    x = 711.32

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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.