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Finding the Fourth Proportional to 581.39, 867.55 and 529.64

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Solution

The fourth proportional to 581.39, 867.55 and 529.64 is: 790.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.39 : 867.55 = 529.64 : x
  2. Step 2: Convert to fraction form
    581.39/867.55 = 529.64/x
  3. Step 3: Cross multiply
    581.39x = 867.55 × 529.64
  4. Step 4: Simplify right side
    581.39x = 459,483.52
  5. Step 5: Solve for x
    x = 459,483.52/581.39
  6. Step 6: Final answer
    x = 790.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.