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Finding the Fourth Proportional to 703.27, 1,054.91 and 459.93

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Solution

The fourth proportional to 703.27, 1,054.91 and 459.93 is: 689.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.27 : 1,054.91 = 459.93 : x
  2. Step 2: Convert to fraction form
    703.27/1,054.91 = 459.93/x
  3. Step 3: Cross multiply
    703.27x = 1,054.91 × 459.93
  4. Step 4: Simplify right side
    703.27x = 485,184.76
  5. Step 5: Solve for x
    x = 485,184.76/703.27
  6. Step 6: Final answer
    x = 689.90

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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.