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Finding the Fourth Proportional to 858.04, 1,183.88 and 484.94

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Solution

The fourth proportional to 858.04, 1,183.88 and 484.94 is: 669.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    858.04 : 1,183.88 = 484.94 : x
  2. Step 2: Convert to fraction form
    858.04/1,183.88 = 484.94/x
  3. Step 3: Cross multiply
    858.04x = 1,183.88 × 484.94
  4. Step 4: Simplify right side
    858.04x = 574,110.77
  5. Step 5: Solve for x
    x = 574,110.77/858.04
  6. Step 6: Final answer
    x = 669.10

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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.