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Finding the Fourth Proportional to 572.92, 790.61 and 310.93

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Solution

The fourth proportional to 572.92, 790.61 and 310.93 is: 429.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.92 : 790.61 = 310.93 : x
  2. Step 2: Convert to fraction form
    572.92/790.61 = 310.93/x
  3. Step 3: Cross multiply
    572.92x = 790.61 × 310.93
  4. Step 4: Simplify right side
    572.92x = 245,820.84
  5. Step 5: Solve for x
    x = 245,820.84/572.92
  6. Step 6: Final answer
    x = 429.07

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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.