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Finding the Fourth Proportional to 522.76, 718.40 and 508.18

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Solution

The fourth proportional to 522.76, 718.40 and 508.18 is: 698.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.76 : 718.40 = 508.18 : x
  2. Step 2: Convert to fraction form
    522.76/718.40 = 508.18/x
  3. Step 3: Cross multiply
    522.76x = 718.40 × 508.18
  4. Step 4: Simplify right side
    522.76x = 365,076.51
  5. Step 5: Solve for x
    x = 365,076.51/522.76
  6. Step 6: Final answer
    x = 698.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.