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Finding the Fourth Proportional to 895.62, 1,236.53 and 615.76

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Solution

The fourth proportional to 895.62, 1,236.53 and 615.76 is: 850.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    895.62 : 1,236.53 = 615.76 : x
  2. Step 2: Convert to fraction form
    895.62/1,236.53 = 615.76/x
  3. Step 3: Cross multiply
    895.62x = 1,236.53 × 615.76
  4. Step 4: Simplify right side
    895.62x = 761,405.71
  5. Step 5: Solve for x
    x = 761,405.71/895.62
  6. Step 6: Final answer
    x = 850.14

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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.