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Finding the Fourth Proportional to 572.64, 858.08 and 450.40

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Solution

The fourth proportional to 572.64, 858.08 and 450.40 is: 674.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.64 : 858.08 = 450.40 : x
  2. Step 2: Convert to fraction form
    572.64/858.08 = 450.40/x
  3. Step 3: Cross multiply
    572.64x = 858.08 × 450.40
  4. Step 4: Simplify right side
    572.64x = 386,479.23
  5. Step 5: Solve for x
    x = 386,479.23/572.64
  6. Step 6: Final answer
    x = 674.91

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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.