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Finding the Fourth Proportional to 957.18, 1,435.78 and 437.16

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Solution

The fourth proportional to 957.18, 1,435.78 and 437.16 is: 655.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    957.18 : 1,435.78 = 437.16 : x
  2. Step 2: Convert to fraction form
    957.18/1,435.78 = 437.16/x
  3. Step 3: Cross multiply
    957.18x = 1,435.78 × 437.16
  4. Step 4: Simplify right side
    957.18x = 627,665.58
  5. Step 5: Solve for x
    x = 627,665.58/957.18
  6. Step 6: Final answer
    x = 655.74

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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.