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Finding the Fourth Proportional to 1,415.98, 2,124.06 and 442.06

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Solution

The fourth proportional to 1,415.98, 2,124.06 and 442.06 is: 663.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415.98 : 2,124.06 = 442.06 : x
  2. Step 2: Convert to fraction form
    1,415.98/2,124.06 = 442.06/x
  3. Step 3: Cross multiply
    1,415.98x = 2,124.06 × 442.06
  4. Step 4: Simplify right side
    1,415.98x = 938,955.00
  5. Step 5: Solve for x
    x = 938,955.00/1,415.98
  6. Step 6: Final answer
    x = 663.11

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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.