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Finding the Fourth Proportional to 379.50, 526.10 and 358.71

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Solution

The fourth proportional to 379.50, 526.10 and 358.71 is: 497.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.50 : 526.10 = 358.71 : x
  2. Step 2: Convert to fraction form
    379.50/526.10 = 358.71/x
  3. Step 3: Cross multiply
    379.50x = 526.10 × 358.71
  4. Step 4: Simplify right side
    379.50x = 188,715.41
  5. Step 5: Solve for x
    x = 188,715.41/379.50
  6. Step 6: Final answer
    x = 497.28

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.