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Finding the Fourth Proportional to 715.52, 990.23 and 703.37

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Solution

The fourth proportional to 715.52, 990.23 and 703.37 is: 973.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    715.52 : 990.23 = 703.37 : x
  2. Step 2: Convert to fraction form
    715.52/990.23 = 703.37/x
  3. Step 3: Cross multiply
    715.52x = 990.23 × 703.37
  4. Step 4: Simplify right side
    715.52x = 696,497.03
  5. Step 5: Solve for x
    x = 696,497.03/715.52
  6. Step 6: Final answer
    x = 973.41

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Double scale
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1.5x scale

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.