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Finding the Fourth Proportional to 545.19, 752.29 and 324.12

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Solution

The fourth proportional to 545.19, 752.29 and 324.12 is: 447.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.19 : 752.29 = 324.12 : x
  2. Step 2: Convert to fraction form
    545.19/752.29 = 324.12/x
  3. Step 3: Cross multiply
    545.19x = 752.29 × 324.12
  4. Step 4: Simplify right side
    545.19x = 243,832.23
  5. Step 5: Solve for x
    x = 243,832.23/545.19
  6. Step 6: Final answer
    x = 447.24

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.