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Finding the Fourth Proportional to 657.96, 905.88 and 526.76

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Solution

The fourth proportional to 657.96, 905.88 and 526.76 is: 725.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.96 : 905.88 = 526.76 : x
  2. Step 2: Convert to fraction form
    657.96/905.88 = 526.76/x
  3. Step 3: Cross multiply
    657.96x = 905.88 × 526.76
  4. Step 4: Simplify right side
    657.96x = 477,181.35
  5. Step 5: Solve for x
    x = 477,181.35/657.96
  6. Step 6: Final answer
    x = 725.24

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Find fourth proportional to 328.98, 452.94 and 263.38
Half scale
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Double scale
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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.