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Finding the Fourth Proportional to 691.04, 953.84 and 442.50

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Solution

The fourth proportional to 691.04, 953.84 and 442.50 is: 610.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.04 : 953.84 = 442.50 : x
  2. Step 2: Convert to fraction form
    691.04/953.84 = 442.50/x
  3. Step 3: Cross multiply
    691.04x = 953.84 × 442.50
  4. Step 4: Simplify right side
    691.04x = 422,074.20
  5. Step 5: Solve for x
    x = 422,074.20/691.04
  6. Step 6: Final answer
    x = 610.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.