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Finding the Fourth Proportional to 545.34, 752.45 and 324.37

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Solution

The fourth proportional to 545.34, 752.45 and 324.37 is: 447.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.34 : 752.45 = 324.37 : x
  2. Step 2: Convert to fraction form
    545.34/752.45 = 324.37/x
  3. Step 3: Cross multiply
    545.34x = 752.45 × 324.37
  4. Step 4: Simplify right side
    545.34x = 244,066.82
  5. Step 5: Solve for x
    x = 244,066.82/545.34
  6. Step 6: Final answer
    x = 447.55

Related Problems

Find fourth proportional to 272.67, 376.22 and 162.18
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.