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Finding the Fourth Proportional to 645.60, 968.56 and 234.96

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Solution

The fourth proportional to 645.60, 968.56 and 234.96 is: 352.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.60 : 968.56 = 234.96 : x
  2. Step 2: Convert to fraction form
    645.60/968.56 = 234.96/x
  3. Step 3: Cross multiply
    645.60x = 968.56 × 234.96
  4. Step 4: Simplify right side
    645.60x = 227,572.86
  5. Step 5: Solve for x
    x = 227,572.86/645.60
  6. Step 6: Final answer
    x = 352.50

Related Problems

Find fourth proportional to 322.80, 484.28 and 117.48
Half scale
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Double scale
Find fourth proportional to 646.60, 970.06 and 235.96
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.