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Finding the Fourth Proportional to 833.42, 1,243.79 and 741.16

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Solution

The fourth proportional to 833.42, 1,243.79 and 741.16 is: 1,106.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.42 : 1,243.79 = 741.16 : x
  2. Step 2: Convert to fraction form
    833.42/1,243.79 = 741.16/x
  3. Step 3: Cross multiply
    833.42x = 1,243.79 × 741.16
  4. Step 4: Simplify right side
    833.42x = 921,840.58
  5. Step 5: Solve for x
    x = 921,840.58/833.42
  6. Step 6: Final answer
    x = 1,106.10

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1.5x scale

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.