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Finding the Fourth Proportional to 653.19, 900.90 and 454.02

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Solution

The fourth proportional to 653.19, 900.90 and 454.02 is: 626.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.19 : 900.90 = 454.02 : x
  2. Step 2: Convert to fraction form
    653.19/900.90 = 454.02/x
  3. Step 3: Cross multiply
    653.19x = 900.90 × 454.02
  4. Step 4: Simplify right side
    653.19x = 409,020.37
  5. Step 5: Solve for x
    x = 409,020.37/653.19
  6. Step 6: Final answer
    x = 626.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.