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Finding the Fourth Proportional to 584.76, 877.55 and 390.01

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Solution

The fourth proportional to 584.76, 877.55 and 390.01 is: 585.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    584.76 : 877.55 = 390.01 : x
  2. Step 2: Convert to fraction form
    584.76/877.55 = 390.01/x
  3. Step 3: Cross multiply
    584.76x = 877.55 × 390.01
  4. Step 4: Simplify right side
    584.76x = 342,249.13
  5. Step 5: Solve for x
    x = 342,249.13/584.76
  6. Step 6: Final answer
    x = 585.28

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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.