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Finding the Fourth Proportional to 545.56, 752.40 and 348.76

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Solution

The fourth proportional to 545.56, 752.40 and 348.76 is: 480.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.56 : 752.40 = 348.76 : x
  2. Step 2: Convert to fraction form
    545.56/752.40 = 348.76/x
  3. Step 3: Cross multiply
    545.56x = 752.40 × 348.76
  4. Step 4: Simplify right side
    545.56x = 262,407.02
  5. Step 5: Solve for x
    x = 262,407.02/545.56
  6. Step 6: Final answer
    x = 480.99

Related Problems

Find fourth proportional to 272.78, 376.20 and 174.38
Half scale
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Double scale
Find fourth proportional to 546.56, 753.78 and 349.76
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.