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Finding the Fourth Proportional to 352.76, 529.20 and 312.08

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Solution

The fourth proportional to 352.76, 529.20 and 312.08 is: 468.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.76 : 529.20 = 312.08 : x
  2. Step 2: Convert to fraction form
    352.76/529.20 = 312.08/x
  3. Step 3: Cross multiply
    352.76x = 529.20 × 312.08
  4. Step 4: Simplify right side
    352.76x = 165,152.74
  5. Step 5: Solve for x
    x = 165,152.74/352.76
  6. Step 6: Final answer
    x = 468.17

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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.