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Finding the Fourth Proportional to 1,075.33, 1,484.13 and 655.75

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Solution

The fourth proportional to 1,075.33, 1,484.13 and 655.75 is: 905.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,075.33 : 1,484.13 = 655.75 : x
  2. Step 2: Convert to fraction form
    1,075.33/1,484.13 = 655.75/x
  3. Step 3: Cross multiply
    1,075.33x = 1,484.13 × 655.75
  4. Step 4: Simplify right side
    1,075.33x = 973,218.25
  5. Step 5: Solve for x
    x = 973,218.25/1,075.33
  6. Step 6: Final answer
    x = 905.04

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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.