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Finding the Fourth Proportional to 1,257.18, 1,886.15 and 599.55

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Solution

The fourth proportional to 1,257.18, 1,886.15 and 599.55 is: 899.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257.18 : 1,886.15 = 599.55 : x
  2. Step 2: Convert to fraction form
    1,257.18/1,886.15 = 599.55/x
  3. Step 3: Cross multiply
    1,257.18x = 1,886.15 × 599.55
  4. Step 4: Simplify right side
    1,257.18x = 1,130,838.23
  5. Step 5: Solve for x
    x = 1,130,838.23/1,257.18
  6. Step 6: Final answer
    x = 899.50

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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.