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Finding the Fourth Proportional to 867.42, 1,301.49 and 404.91

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Solution

The fourth proportional to 867.42, 1,301.49 and 404.91 is: 607.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.42 : 1,301.49 = 404.91 : x
  2. Step 2: Convert to fraction form
    867.42/1,301.49 = 404.91/x
  3. Step 3: Cross multiply
    867.42x = 1,301.49 × 404.91
  4. Step 4: Simplify right side
    867.42x = 526,986.32
  5. Step 5: Solve for x
    x = 526,986.32/867.42
  6. Step 6: Final answer
    x = 607.53

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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.