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Finding the Fourth Proportional to 545.64, 818.28 and 302.28

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Solution

The fourth proportional to 545.64, 818.28 and 302.28 is: 453.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.64 : 818.28 = 302.28 : x
  2. Step 2: Convert to fraction form
    545.64/818.28 = 302.28/x
  3. Step 3: Cross multiply
    545.64x = 818.28 × 302.28
  4. Step 4: Simplify right side
    545.64x = 247,349.68
  5. Step 5: Solve for x
    x = 247,349.68/545.64
  6. Step 6: Final answer
    x = 453.32

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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.