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Finding the Fourth Proportional to 962.93, 1,443.66 and 442.56

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Solution

The fourth proportional to 962.93, 1,443.66 and 442.56 is: 663.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.93 : 1,443.66 = 442.56 : x
  2. Step 2: Convert to fraction form
    962.93/1,443.66 = 442.56/x
  3. Step 3: Cross multiply
    962.93x = 1,443.66 × 442.56
  4. Step 4: Simplify right side
    962.93x = 638,906.17
  5. Step 5: Solve for x
    x = 638,906.17/962.93
  6. Step 6: Final answer
    x = 663.51

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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.