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Finding the Fourth Proportional to 1,122.93, 1,549.84 and 703.64

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Solution

The fourth proportional to 1,122.93, 1,549.84 and 703.64 is: 971.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122.93 : 1,549.84 = 703.64 : x
  2. Step 2: Convert to fraction form
    1,122.93/1,549.84 = 703.64/x
  3. Step 3: Cross multiply
    1,122.93x = 1,549.84 × 703.64
  4. Step 4: Simplify right side
    1,122.93x = 1,090,529.42
  5. Step 5: Solve for x
    x = 1,090,529.42/1,122.93
  6. Step 6: Final answer
    x = 971.15

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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.