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Finding the Fourth Proportional to 700.96, 965.20 and 553.12

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Solution

The fourth proportional to 700.96, 965.20 and 553.12 is: 761.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.96 : 965.20 = 553.12 : x
  2. Step 2: Convert to fraction form
    700.96/965.20 = 553.12/x
  3. Step 3: Cross multiply
    700.96x = 965.20 × 553.12
  4. Step 4: Simplify right side
    700.96x = 533,871.42
  5. Step 5: Solve for x
    x = 533,871.42/700.96
  6. Step 6: Final answer
    x = 761.63

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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.