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Finding the Fourth Proportional to 707.23, 1,060.84 and 290.76

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Solution

The fourth proportional to 707.23, 1,060.84 and 290.76 is: 436.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.23 : 1,060.84 = 290.76 : x
  2. Step 2: Convert to fraction form
    707.23/1,060.84 = 290.76/x
  3. Step 3: Cross multiply
    707.23x = 1,060.84 × 290.76
  4. Step 4: Simplify right side
    707.23x = 308,444.53
  5. Step 5: Solve for x
    x = 308,444.53/707.23
  6. Step 6: Final answer
    x = 436.13

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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.