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Finding the Fourth Proportional to 545.40, 751.98 and 467.64

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Solution

The fourth proportional to 545.40, 751.98 and 467.64 is: 644.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.40 : 751.98 = 467.64 : x
  2. Step 2: Convert to fraction form
    545.40/751.98 = 467.64/x
  3. Step 3: Cross multiply
    545.40x = 751.98 × 467.64
  4. Step 4: Simplify right side
    545.40x = 351,655.93
  5. Step 5: Solve for x
    x = 351,655.93/545.40
  6. Step 6: Final answer
    x = 644.77

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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.