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Finding the Fourth Proportional to 585.04, 877.66 and 260.40

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Solution

The fourth proportional to 585.04, 877.66 and 260.40 is: 390.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.04 : 877.66 = 260.40 : x
  2. Step 2: Convert to fraction form
    585.04/877.66 = 260.40/x
  3. Step 3: Cross multiply
    585.04x = 877.66 × 260.40
  4. Step 4: Simplify right side
    585.04x = 228,542.66
  5. Step 5: Solve for x
    x = 228,542.66/585.04
  6. Step 6: Final answer
    x = 390.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.