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Finding the Fourth Proportional to 545.12, 751.92 and 348.76

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Solution

The fourth proportional to 545.12, 751.92 and 348.76 is: 481.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.12 : 751.92 = 348.76 : x
  2. Step 2: Convert to fraction form
    545.12/751.92 = 348.76/x
  3. Step 3: Cross multiply
    545.12x = 751.92 × 348.76
  4. Step 4: Simplify right side
    545.12x = 262,239.62
  5. Step 5: Solve for x
    x = 262,239.62/545.12
  6. Step 6: Final answer
    x = 481.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.