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Finding the Fourth Proportional to 802.25, 1,106.43 and 522.35

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Solution

The fourth proportional to 802.25, 1,106.43 and 522.35 is: 720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.25 : 1,106.43 = 522.35 : x
  2. Step 2: Convert to fraction form
    802.25/1,106.43 = 522.35/x
  3. Step 3: Cross multiply
    802.25x = 1,106.43 × 522.35
  4. Step 4: Simplify right side
    802.25x = 577,943.71
  5. Step 5: Solve for x
    x = 577,943.71/802.25
  6. Step 6: Final answer
    x = 720.40

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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.