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Finding the Fourth Proportional to 1,263.98, 1,896.08 and 442.18

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Solution

The fourth proportional to 1,263.98, 1,896.08 and 442.18 is: 663.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263.98 : 1,896.08 = 442.18 : x
  2. Step 2: Convert to fraction form
    1,263.98/1,896.08 = 442.18/x
  3. Step 3: Cross multiply
    1,263.98x = 1,896.08 × 442.18
  4. Step 4: Simplify right side
    1,263.98x = 838,417.88
  5. Step 5: Solve for x
    x = 838,417.88/1,263.98
  6. Step 6: Final answer
    x = 663.32

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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.