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Finding the Fourth Proportional to 858.91, 1,184.21 and 701.38

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Solution

The fourth proportional to 858.91, 1,184.21 and 701.38 is: 967.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    858.91 : 1,184.21 = 701.38 : x
  2. Step 2: Convert to fraction form
    858.91/1,184.21 = 701.38/x
  3. Step 3: Cross multiply
    858.91x = 1,184.21 × 701.38
  4. Step 4: Simplify right side
    858.91x = 830,581.21
  5. Step 5: Solve for x
    x = 830,581.21/858.91
  6. Step 6: Final answer
    x = 967.02

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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.