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Finding the Fourth Proportional to 707.23, 1,059.45 and 654.06

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Solution

The fourth proportional to 707.23, 1,059.45 and 654.06 is: 979.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.23 : 1,059.45 = 654.06 : x
  2. Step 2: Convert to fraction form
    707.23/1,059.45 = 654.06/x
  3. Step 3: Cross multiply
    707.23x = 1,059.45 × 654.06
  4. Step 4: Simplify right side
    707.23x = 692,943.87
  5. Step 5: Solve for x
    x = 692,943.87/707.23
  6. Step 6: Final answer
    x = 979.80

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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.