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Finding the Fourth Proportional to 469.29, 703.55 and 314.75

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Solution

The fourth proportional to 469.29, 703.55 and 314.75 is: 471.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.29 : 703.55 = 314.75 : x
  2. Step 2: Convert to fraction form
    469.29/703.55 = 314.75/x
  3. Step 3: Cross multiply
    469.29x = 703.55 × 314.75
  4. Step 4: Simplify right side
    469.29x = 221,442.36
  5. Step 5: Solve for x
    x = 221,442.36/469.29
  6. Step 6: Final answer
    x = 471.87

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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.