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Finding the Fourth Proportional to 690.62, 1,034.39 and 567.50

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Solution

The fourth proportional to 690.62, 1,034.39 and 567.50 is: 849.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.62 : 1,034.39 = 567.50 : x
  2. Step 2: Convert to fraction form
    690.62/1,034.39 = 567.50/x
  3. Step 3: Cross multiply
    690.62x = 1,034.39 × 567.50
  4. Step 4: Simplify right side
    690.62x = 587,008.32
  5. Step 5: Solve for x
    x = 587,008.32/690.62
  6. Step 6: Final answer
    x = 849.98

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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.