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Finding the Fourth Proportional to 545.80, 753.17 and 324.77

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Solution

The fourth proportional to 545.80, 753.17 and 324.77 is: 448.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.80 : 753.17 = 324.77 : x
  2. Step 2: Convert to fraction form
    545.80/753.17 = 324.77/x
  3. Step 3: Cross multiply
    545.80x = 753.17 × 324.77
  4. Step 4: Simplify right side
    545.80x = 244,601.63
  5. Step 5: Solve for x
    x = 244,601.63/545.80
  6. Step 6: Final answer
    x = 448.15

Related Problems

Find fourth proportional to 272.90, 376.58 and 162.38
Half scale
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Double scale
Find fourth proportional to 546.80, 754.54 and 325.77
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.