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Finding the Fourth Proportional to 885.95, 1,222.72 and 536.63

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Solution

The fourth proportional to 885.95, 1,222.72 and 536.63 is: 740.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.95 : 1,222.72 = 536.63 : x
  2. Step 2: Convert to fraction form
    885.95/1,222.72 = 536.63/x
  3. Step 3: Cross multiply
    885.95x = 1,222.72 × 536.63
  4. Step 4: Simplify right side
    885.95x = 656,149.95
  5. Step 5: Solve for x
    x = 656,149.95/885.95
  6. Step 6: Final answer
    x = 740.62

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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.