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Finding the Fourth Proportional to 753.95, 1,122.98 and 714.94

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Solution

The fourth proportional to 753.95, 1,122.98 and 714.94 is: 1,064.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    753.95 : 1,122.98 = 714.94 : x
  2. Step 2: Convert to fraction form
    753.95/1,122.98 = 714.94/x
  3. Step 3: Cross multiply
    753.95x = 1,122.98 × 714.94
  4. Step 4: Simplify right side
    753.95x = 802,856.94
  5. Step 5: Solve for x
    x = 802,856.94/753.95
  6. Step 6: Final answer
    x = 1,064.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.