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Finding the Fourth Proportional to 954.34, 1,316.34 and 623.06

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Solution

The fourth proportional to 954.34, 1,316.34 and 623.06 is: 859.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.34 : 1,316.34 = 623.06 : x
  2. Step 2: Convert to fraction form
    954.34/1,316.34 = 623.06/x
  3. Step 3: Cross multiply
    954.34x = 1,316.34 × 623.06
  4. Step 4: Simplify right side
    954.34x = 820,158.80
  5. Step 5: Solve for x
    x = 820,158.80/954.34
  6. Step 6: Final answer
    x = 859.40

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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.