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Finding the Fourth Proportional to 653.40, 901.71 and 358.69

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Solution

The fourth proportional to 653.40, 901.71 and 358.69 is: 495.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.40 : 901.71 = 358.69 : x
  2. Step 2: Convert to fraction form
    653.40/901.71 = 358.69/x
  3. Step 3: Cross multiply
    653.40x = 901.71 × 358.69
  4. Step 4: Simplify right side
    653.40x = 323,434.36
  5. Step 5: Solve for x
    x = 323,434.36/653.40
  6. Step 6: Final answer
    x = 495.00

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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.