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Finding the Fourth Proportional to 701.66, 1,051.58 and 455.02

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Solution

The fourth proportional to 701.66, 1,051.58 and 455.02 is: 681.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.66 : 1,051.58 = 455.02 : x
  2. Step 2: Convert to fraction form
    701.66/1,051.58 = 455.02/x
  3. Step 3: Cross multiply
    701.66x = 1,051.58 × 455.02
  4. Step 4: Simplify right side
    701.66x = 478,488.44
  5. Step 5: Solve for x
    x = 478,488.44/701.66
  6. Step 6: Final answer
    x = 681.94

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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.