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Finding the Fourth Proportional to 661.51, 901.51 and 659.08

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Solution

The fourth proportional to 661.51, 901.51 and 659.08 is: 898.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    661.51 : 901.51 = 659.08 : x
  2. Step 2: Convert to fraction form
    661.51/901.51 = 659.08/x
  3. Step 3: Cross multiply
    661.51x = 901.51 × 659.08
  4. Step 4: Simplify right side
    661.51x = 594,163.92
  5. Step 5: Solve for x
    x = 594,163.92/661.51
  6. Step 6: Final answer
    x = 898.19

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.