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Finding the Fourth Proportional to 545.32, 751.62 and 447.16

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Solution

The fourth proportional to 545.32, 751.62 and 447.16 is: 616.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.32 : 751.62 = 447.16 : x
  2. Step 2: Convert to fraction form
    545.32/751.62 = 447.16/x
  3. Step 3: Cross multiply
    545.32x = 751.62 × 447.16
  4. Step 4: Simplify right side
    545.32x = 336,094.40
  5. Step 5: Solve for x
    x = 336,094.40/545.32
  6. Step 6: Final answer
    x = 616.33

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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.