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Finding the Fourth Proportional to 314.90, 472.08 and 152.36

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Solution

The fourth proportional to 314.90, 472.08 and 152.36 is: 228.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.90 : 472.08 = 152.36 : x
  2. Step 2: Convert to fraction form
    314.90/472.08 = 152.36/x
  3. Step 3: Cross multiply
    314.90x = 472.08 × 152.36
  4. Step 4: Simplify right side
    314.90x = 71,926.11
  5. Step 5: Solve for x
    x = 71,926.11/314.90
  6. Step 6: Final answer
    x = 228.41

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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.