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Finding the Fourth Proportional to 662.99, 915.59 and 430.25

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Solution

The fourth proportional to 662.99, 915.59 and 430.25 is: 594.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.99 : 915.59 = 430.25 : x
  2. Step 2: Convert to fraction form
    662.99/915.59 = 430.25/x
  3. Step 3: Cross multiply
    662.99x = 915.59 × 430.25
  4. Step 4: Simplify right side
    662.99x = 393,932.60
  5. Step 5: Solve for x
    x = 393,932.60/662.99
  6. Step 6: Final answer
    x = 594.18

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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.