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Finding the Fourth Proportional to 1,681.25, 2,521.47 and 527.00

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Solution

The fourth proportional to 1,681.25, 2,521.47 and 527.00 is: 790.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.25 : 2,521.47 = 527.00 : x
  2. Step 2: Convert to fraction form
    1,681.25/2,521.47 = 527.00/x
  3. Step 3: Cross multiply
    1,681.25x = 2,521.47 × 527.00
  4. Step 4: Simplify right side
    1,681.25x = 1,328,802.08
  5. Step 5: Solve for x
    x = 1,328,802.08/1,681.25
  6. Step 6: Final answer
    x = 790.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.