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Finding the Fourth Proportional to 797.70, 1,100.70 and 502.95

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Solution

The fourth proportional to 797.70, 1,100.70 and 502.95 is: 693.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.70 : 1,100.70 = 502.95 : x
  2. Step 2: Convert to fraction form
    797.70/1,100.70 = 502.95/x
  3. Step 3: Cross multiply
    797.70x = 1,100.70 × 502.95
  4. Step 4: Simplify right side
    797.70x = 553,597.07
  5. Step 5: Solve for x
    x = 553,597.07/797.70
  6. Step 6: Final answer
    x = 693.99

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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.