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Finding the Fourth Proportional to 1,564.66, 2,159.26 and 901.64

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Solution

The fourth proportional to 1,564.66, 2,159.26 and 901.64 is: 1,244.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,564.66 : 2,159.26 = 901.64 : x
  2. Step 2: Convert to fraction form
    1,564.66/2,159.26 = 901.64/x
  3. Step 3: Cross multiply
    1,564.66x = 2,159.26 × 901.64
  4. Step 4: Simplify right side
    1,564.66x = 1,946,875.19
  5. Step 5: Solve for x
    x = 1,946,875.19/1,564.66
  6. Step 6: Final answer
    x = 1,244.28

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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.