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Finding the Fourth Proportional to 530.45, 731.13 and 483.98

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Solution

The fourth proportional to 530.45, 731.13 and 483.98 is: 667.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.45 : 731.13 = 483.98 : x
  2. Step 2: Convert to fraction form
    530.45/731.13 = 483.98/x
  3. Step 3: Cross multiply
    530.45x = 731.13 × 483.98
  4. Step 4: Simplify right side
    530.45x = 353,846.83
  5. Step 5: Solve for x
    x = 353,846.83/530.45
  6. Step 6: Final answer
    x = 667.07

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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.