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Finding the Fourth Proportional to 1,208.07, 1,667.16 and 684.14

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Solution

The fourth proportional to 1,208.07, 1,667.16 and 684.14 is: 944.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208.07 : 1,667.16 = 684.14 : x
  2. Step 2: Convert to fraction form
    1,208.07/1,667.16 = 684.14/x
  3. Step 3: Cross multiply
    1,208.07x = 1,667.16 × 684.14
  4. Step 4: Simplify right side
    1,208.07x = 1,140,562.51
  5. Step 5: Solve for x
    x = 1,140,562.51/1,208.07
  6. Step 6: Final answer
    x = 944.12

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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.