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Finding the Fourth Proportional to 549.85, 820.86 and 530.63

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Solution

The fourth proportional to 549.85, 820.86 and 530.63 is: 792.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.85 : 820.86 = 530.63 : x
  2. Step 2: Convert to fraction form
    549.85/820.86 = 530.63/x
  3. Step 3: Cross multiply
    549.85x = 820.86 × 530.63
  4. Step 4: Simplify right side
    549.85x = 435,572.94
  5. Step 5: Solve for x
    x = 435,572.94/549.85
  6. Step 6: Final answer
    x = 792.17

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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.