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Finding the Fourth Proportional to 697.95, 1,045.31 and 534.33

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Solution

The fourth proportional to 697.95, 1,045.31 and 534.33 is: 800.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.95 : 1,045.31 = 534.33 : x
  2. Step 2: Convert to fraction form
    697.95/1,045.31 = 534.33/x
  3. Step 3: Cross multiply
    697.95x = 1,045.31 × 534.33
  4. Step 4: Simplify right side
    697.95x = 558,537.82
  5. Step 5: Solve for x
    x = 558,537.82/697.95
  6. Step 6: Final answer
    x = 800.25

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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.