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Finding the Fourth Proportional to 613.36, 923.31 and 528.58

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Solution

The fourth proportional to 613.36, 923.31 and 528.58 is: 795.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.36 : 923.31 = 528.58 : x
  2. Step 2: Convert to fraction form
    613.36/923.31 = 528.58/x
  3. Step 3: Cross multiply
    613.36x = 923.31 × 528.58
  4. Step 4: Simplify right side
    613.36x = 488,043.20
  5. Step 5: Solve for x
    x = 488,043.20/613.36
  6. Step 6: Final answer
    x = 795.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.