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Finding the Fourth Proportional to 707.29, 975.23 and 655.45

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Solution

The fourth proportional to 707.29, 975.23 and 655.45 is: 903.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.29 : 975.23 = 655.45 : x
  2. Step 2: Convert to fraction form
    707.29/975.23 = 655.45/x
  3. Step 3: Cross multiply
    707.29x = 975.23 × 655.45
  4. Step 4: Simplify right side
    707.29x = 639,211.23
  5. Step 5: Solve for x
    x = 639,211.23/707.29
  6. Step 6: Final answer
    x = 903.75

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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.