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Finding the Fourth Proportional to 602.90, 899.97 and 530

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Solution

The fourth proportional to 602.90, 899.97 and 530 is: 791.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.90 : 899.97 = 530 : x
  2. Step 2: Convert to fraction form
    602.90/899.97 = 530/x
  3. Step 3: Cross multiply
    602.90x = 899.97 × 530
  4. Step 4: Simplify right side
    602.90x = 476,984.10
  5. Step 5: Solve for x
    x = 476,984.10/602.90
  6. Step 6: Final answer
    x = 791.15

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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.