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Finding the Fourth Proportional to 603.21, 900.46 and 558.12

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Solution

The fourth proportional to 603.21, 900.46 and 558.12 is: 833.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.21 : 900.46 = 558.12 : x
  2. Step 2: Convert to fraction form
    603.21/900.46 = 558.12/x
  3. Step 3: Cross multiply
    603.21x = 900.46 × 558.12
  4. Step 4: Simplify right side
    603.21x = 502,564.74
  5. Step 5: Solve for x
    x = 502,564.74/603.21
  6. Step 6: Final answer
    x = 833.15

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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.