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Finding the Fourth Proportional to 1,654.79, 2,283.63 and 908.81

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Solution

The fourth proportional to 1,654.79, 2,283.63 and 908.81 is: 1,254.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,654.79 : 2,283.63 = 908.81 : x
  2. Step 2: Convert to fraction form
    1,654.79/2,283.63 = 908.81/x
  3. Step 3: Cross multiply
    1,654.79x = 2,283.63 × 908.81
  4. Step 4: Simplify right side
    1,654.79x = 2,075,391.49
  5. Step 5: Solve for x
    x = 2,075,391.49/1,654.79
  6. Step 6: Final answer
    x = 1,254.18

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1.5x scale

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.