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Finding the Fourth Proportional to 545.63, 818.96 and 340.58

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Solution

The fourth proportional to 545.63, 818.96 and 340.58 is: 511.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.63 : 818.96 = 340.58 : x
  2. Step 2: Convert to fraction form
    545.63/818.96 = 340.58/x
  3. Step 3: Cross multiply
    545.63x = 818.96 × 340.58
  4. Step 4: Simplify right side
    545.63x = 278,921.74
  5. Step 5: Solve for x
    x = 278,921.74/545.63
  6. Step 6: Final answer
    x = 511.20

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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.