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Finding the Fourth Proportional to 641.52, 956.88 and 573.84

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Solution

The fourth proportional to 641.52, 956.88 and 573.84 is: 855.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.52 : 956.88 = 573.84 : x
  2. Step 2: Convert to fraction form
    641.52/956.88 = 573.84/x
  3. Step 3: Cross multiply
    641.52x = 956.88 × 573.84
  4. Step 4: Simplify right side
    641.52x = 549,096.02
  5. Step 5: Solve for x
    x = 549,096.02/641.52
  6. Step 6: Final answer
    x = 855.93

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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.