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Finding the Fourth Proportional to 530.55, 791.98 and 490.46

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Solution

The fourth proportional to 530.55, 791.98 and 490.46 is: 732.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.55 : 791.98 = 490.46 : x
  2. Step 2: Convert to fraction form
    530.55/791.98 = 490.46/x
  3. Step 3: Cross multiply
    530.55x = 791.98 × 490.46
  4. Step 4: Simplify right side
    530.55x = 388,429.32
  5. Step 5: Solve for x
    x = 388,429.32/530.55
  6. Step 6: Final answer
    x = 732.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.