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Finding the Fourth Proportional to 317.98, 477.04 and 101.56

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Solution

The fourth proportional to 317.98, 477.04 and 101.56 is: 152.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.98 : 477.04 = 101.56 : x
  2. Step 2: Convert to fraction form
    317.98/477.04 = 101.56/x
  3. Step 3: Cross multiply
    317.98x = 477.04 × 101.56
  4. Step 4: Simplify right side
    317.98x = 48,448.18
  5. Step 5: Solve for x
    x = 48,448.18/317.98
  6. Step 6: Final answer
    x = 152.36

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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.