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Finding the Fourth Proportional to 867.95, 1,197.77 and 469.62

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Solution

The fourth proportional to 867.95, 1,197.77 and 469.62 is: 648.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.95 : 1,197.77 = 469.62 : x
  2. Step 2: Convert to fraction form
    867.95/1,197.77 = 469.62/x
  3. Step 3: Cross multiply
    867.95x = 1,197.77 × 469.62
  4. Step 4: Simplify right side
    867.95x = 562,490.76
  5. Step 5: Solve for x
    x = 562,490.76/867.95
  6. Step 6: Final answer
    x = 648.07

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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.