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Finding the Fourth Proportional to 294.52, 438.74 and 284.70

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Solution

The fourth proportional to 294.52, 438.74 and 284.70 is: 424.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.52 : 438.74 = 284.70 : x
  2. Step 2: Convert to fraction form
    294.52/438.74 = 284.70/x
  3. Step 3: Cross multiply
    294.52x = 438.74 × 284.70
  4. Step 4: Simplify right side
    294.52x = 124,909.28
  5. Step 5: Solve for x
    x = 124,909.28/294.52
  6. Step 6: Final answer
    x = 424.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.