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Finding the Fourth Proportional to 867.77, 1,197.57 and 536.21

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Solution

The fourth proportional to 867.77, 1,197.57 and 536.21 is: 740.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.77 : 1,197.57 = 536.21 : x
  2. Step 2: Convert to fraction form
    867.77/1,197.57 = 536.21/x
  3. Step 3: Cross multiply
    867.77x = 1,197.57 × 536.21
  4. Step 4: Simplify right side
    867.77x = 642,143.02
  5. Step 5: Solve for x
    x = 642,143.02/867.77
  6. Step 6: Final answer
    x = 740.00

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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.