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Finding the Fourth Proportional to 398.93, 595.87 and 317.52

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Solution

The fourth proportional to 398.93, 595.87 and 317.52 is: 474.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.93 : 595.87 = 317.52 : x
  2. Step 2: Convert to fraction form
    398.93/595.87 = 317.52/x
  3. Step 3: Cross multiply
    398.93x = 595.87 × 317.52
  4. Step 4: Simplify right side
    398.93x = 189,199.85
  5. Step 5: Solve for x
    x = 189,199.85/398.93
  6. Step 6: Final answer
    x = 474.27

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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.