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Finding the Fourth Proportional to 545.39, 751.39 and 377.18

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Solution

The fourth proportional to 545.39, 751.39 and 377.18 is: 519.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.39 : 751.39 = 377.18 : x
  2. Step 2: Convert to fraction form
    545.39/751.39 = 377.18/x
  3. Step 3: Cross multiply
    545.39x = 751.39 × 377.18
  4. Step 4: Simplify right side
    545.39x = 283,409.28
  5. Step 5: Solve for x
    x = 283,409.28/545.39
  6. Step 6: Final answer
    x = 519.65

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Double scale
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1.5x scale

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.