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Finding the Fourth Proportional to 914.32, 1,370.25 and 502.84

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Solution

The fourth proportional to 914.32, 1,370.25 and 502.84 is: 753.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.32 : 1,370.25 = 502.84 : x
  2. Step 2: Convert to fraction form
    914.32/1,370.25 = 502.84/x
  3. Step 3: Cross multiply
    914.32x = 1,370.25 × 502.84
  4. Step 4: Simplify right side
    914.32x = 689,016.51
  5. Step 5: Solve for x
    x = 689,016.51/914.32
  6. Step 6: Final answer
    x = 753.58

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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.