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Finding the Fourth Proportional to 1,554.68, 2,327.88 and 858.08

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Solution

The fourth proportional to 1,554.68, 2,327.88 and 858.08 is: 1,284.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,554.68 : 2,327.88 = 858.08 : x
  2. Step 2: Convert to fraction form
    1,554.68/2,327.88 = 858.08/x
  3. Step 3: Cross multiply
    1,554.68x = 2,327.88 × 858.08
  4. Step 4: Simplify right side
    1,554.68x = 1,997,507.27
  5. Step 5: Solve for x
    x = 1,997,507.27/1,554.68
  6. Step 6: Final answer
    x = 1,284.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.