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Finding the Fourth Proportional to 603.64, 903.58 and 395.17

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Solution

The fourth proportional to 603.64, 903.58 and 395.17 is: 591.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.64 : 903.58 = 395.17 : x
  2. Step 2: Convert to fraction form
    603.64/903.58 = 395.17/x
  3. Step 3: Cross multiply
    603.64x = 903.58 × 395.17
  4. Step 4: Simplify right side
    603.64x = 357,067.71
  5. Step 5: Solve for x
    x = 357,067.71/603.64
  6. Step 6: Final answer
    x = 591.52

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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.