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Finding the Fourth Proportional to 697.62, 1,045.77 and 368.49

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Solution

The fourth proportional to 697.62, 1,045.77 and 368.49 is: 552.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.62 : 1,045.77 = 368.49 : x
  2. Step 2: Convert to fraction form
    697.62/1,045.77 = 368.49/x
  3. Step 3: Cross multiply
    697.62x = 1,045.77 × 368.49
  4. Step 4: Simplify right side
    697.62x = 385,355.79
  5. Step 5: Solve for x
    x = 385,355.79/697.62
  6. Step 6: Final answer
    x = 552.39

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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.