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Finding the Fourth Proportional to 662.60, 913.72 and 569.68

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Solution

The fourth proportional to 662.60, 913.72 and 569.68 is: 785.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.60 : 913.72 = 569.68 : x
  2. Step 2: Convert to fraction form
    662.60/913.72 = 569.68/x
  3. Step 3: Cross multiply
    662.60x = 913.72 × 569.68
  4. Step 4: Simplify right side
    662.60x = 520,528.01
  5. Step 5: Solve for x
    x = 520,528.01/662.60
  6. Step 6: Final answer
    x = 785.58

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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.