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Finding the Fourth Proportional to 317.18, 475.77 and 152.55

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Solution

The fourth proportional to 317.18, 475.77 and 152.55 is: 228.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.18 : 475.77 = 152.55 : x
  2. Step 2: Convert to fraction form
    317.18/475.77 = 152.55/x
  3. Step 3: Cross multiply
    317.18x = 475.77 × 152.55
  4. Step 4: Simplify right side
    317.18x = 72,578.71
  5. Step 5: Solve for x
    x = 72,578.71/317.18
  6. Step 6: Final answer
    x = 228.83

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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.