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Finding the Fourth Proportional to 573.51, 861.02 and 368.91

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Solution

The fourth proportional to 573.51, 861.02 and 368.91 is: 553.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.51 : 861.02 = 368.91 : x
  2. Step 2: Convert to fraction form
    573.51/861.02 = 368.91/x
  3. Step 3: Cross multiply
    573.51x = 861.02 × 368.91
  4. Step 4: Simplify right side
    573.51x = 317,637.04
  5. Step 5: Solve for x
    x = 317,637.04/573.51
  6. Step 6: Final answer
    x = 553.85

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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.