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Finding the Fourth Proportional to 1,048.82, 1,444.64 and 970.98

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Solution

The fourth proportional to 1,048.82, 1,444.64 and 970.98 is: 1,337.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.82 : 1,444.64 = 970.98 : x
  2. Step 2: Convert to fraction form
    1,048.82/1,444.64 = 970.98/x
  3. Step 3: Cross multiply
    1,048.82x = 1,444.64 × 970.98
  4. Step 4: Simplify right side
    1,048.82x = 1,402,716.55
  5. Step 5: Solve for x
    x = 1,402,716.55/1,048.82
  6. Step 6: Final answer
    x = 1,337.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.