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Finding the Fourth Proportional to 885.58, 1,222.58 and 707.95

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Solution

The fourth proportional to 885.58, 1,222.58 and 707.95 is: 977.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.58 : 1,222.58 = 707.95 : x
  2. Step 2: Convert to fraction form
    885.58/1,222.58 = 707.95/x
  3. Step 3: Cross multiply
    885.58x = 1,222.58 × 707.95
  4. Step 4: Simplify right side
    885.58x = 865,525.51
  5. Step 5: Solve for x
    x = 865,525.51/885.58
  6. Step 6: Final answer
    x = 977.35

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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.