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Finding the Fourth Proportional to 1,075.66, 1,484.90 and 826.89

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Solution

The fourth proportional to 1,075.66, 1,484.90 and 826.89 is: 1,141.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,075.66 : 1,484.90 = 826.89 : x
  2. Step 2: Convert to fraction form
    1,075.66/1,484.90 = 826.89/x
  3. Step 3: Cross multiply
    1,075.66x = 1,484.90 × 826.89
  4. Step 4: Simplify right side
    1,075.66x = 1,227,858.15
  5. Step 5: Solve for x
    x = 1,227,858.15/1,075.66
  6. Step 6: Final answer
    x = 1,141.49

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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.