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Finding the Fourth Proportional to 1,246.35, 1,870.72 and 630.57

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Solution

The fourth proportional to 1,246.35, 1,870.72 and 630.57 is: 946.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.35 : 1,870.72 = 630.57 : x
  2. Step 2: Convert to fraction form
    1,246.35/1,870.72 = 630.57/x
  3. Step 3: Cross multiply
    1,246.35x = 1,870.72 × 630.57
  4. Step 4: Simplify right side
    1,246.35x = 1,179,625.35
  5. Step 5: Solve for x
    x = 1,179,625.35/1,246.35
  6. Step 6: Final answer
    x = 946.46

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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.