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Finding the Fourth Proportional to 572.76, 790.49 and 351.66

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Solution

The fourth proportional to 572.76, 790.49 and 351.66 is: 485.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.76 : 790.49 = 351.66 : x
  2. Step 2: Convert to fraction form
    572.76/790.49 = 351.66/x
  3. Step 3: Cross multiply
    572.76x = 790.49 × 351.66
  4. Step 4: Simplify right side
    572.76x = 277,983.71
  5. Step 5: Solve for x
    x = 277,983.71/572.76
  6. Step 6: Final answer
    x = 485.34

Related Problems

Find fourth proportional to 286.38, 395.25 and 175.83
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Double scale
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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.