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Finding the Fourth Proportional to 1,043.00, 1,569.74 and 784.34

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Solution

The fourth proportional to 1,043.00, 1,569.74 and 784.34 is: 1,180.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.00 : 1,569.74 = 784.34 : x
  2. Step 2: Convert to fraction form
    1,043.00/1,569.74 = 784.34/x
  3. Step 3: Cross multiply
    1,043.00x = 1,569.74 × 784.34
  4. Step 4: Simplify right side
    1,043.00x = 1,231,209.87
  5. Step 5: Solve for x
    x = 1,231,209.87/1,043.00
  6. Step 6: Final answer
    x = 1,180.45

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.