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Finding the Fourth Proportional to 572.51, 790.13 and 351.49

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Solution

The fourth proportional to 572.51, 790.13 and 351.49 is: 485.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.51 : 790.13 = 351.49 : x
  2. Step 2: Convert to fraction form
    572.51/790.13 = 351.49/x
  3. Step 3: Cross multiply
    572.51x = 790.13 × 351.49
  4. Step 4: Simplify right side
    572.51x = 277,722.79
  5. Step 5: Solve for x
    x = 277,722.79/572.51
  6. Step 6: Final answer
    x = 485.10

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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.