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Finding the Fourth Proportional to 903.18, 1,246.16 and 510.20

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Solution

The fourth proportional to 903.18, 1,246.16 and 510.20 is: 703.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.18 : 1,246.16 = 510.20 : x
  2. Step 2: Convert to fraction form
    903.18/1,246.16 = 510.20/x
  3. Step 3: Cross multiply
    903.18x = 1,246.16 × 510.20
  4. Step 4: Simplify right side
    903.18x = 635,782.05
  5. Step 5: Solve for x
    x = 635,782.05/903.18
  6. Step 6: Final answer
    x = 703.94

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1.5x scale

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.