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Finding the Fourth Proportional to 699.76, 966.30 and 581.68

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Solution

The fourth proportional to 699.76, 966.30 and 581.68 is: 803.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.76 : 966.30 = 581.68 : x
  2. Step 2: Convert to fraction form
    699.76/966.30 = 581.68/x
  3. Step 3: Cross multiply
    699.76x = 966.30 × 581.68
  4. Step 4: Simplify right side
    699.76x = 562,077.38
  5. Step 5: Solve for x
    x = 562,077.38/699.76
  6. Step 6: Final answer
    x = 803.24

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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.