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Finding the Fourth Proportional to 641.75, 957.59 and 602.57

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Solution

The fourth proportional to 641.75, 957.59 and 602.57 is: 899.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.75 : 957.59 = 602.57 : x
  2. Step 2: Convert to fraction form
    641.75/957.59 = 602.57/x
  3. Step 3: Cross multiply
    641.75x = 957.59 × 602.57
  4. Step 4: Simplify right side
    641.75x = 577,011.11
  5. Step 5: Solve for x
    x = 577,011.11/641.75
  6. Step 6: Final answer
    x = 899.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.