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Finding the Fourth Proportional to 545.15, 817.88 and 180.18

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Solution

The fourth proportional to 545.15, 817.88 and 180.18 is: 270.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.15 : 817.88 = 180.18 : x
  2. Step 2: Convert to fraction form
    545.15/817.88 = 180.18/x
  3. Step 3: Cross multiply
    545.15x = 817.88 × 180.18
  4. Step 4: Simplify right side
    545.15x = 147,364.72
  5. Step 5: Solve for x
    x = 147,364.72/545.15
  6. Step 6: Final answer
    x = 270.32

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1.5x scale

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.